Link construction for tractor-treads.



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. MW 1 HID I 'I' IN' I fi l II IIIITIIIIIIIIII I IIHIIIIHIIIIIIH' I. H. DAVIS. 7| LINK CONSTRUCTION FOR TRACTOR TREADS- APPLICATION FIL QD OCT. 15, I917.

IL 289AO9D A A ATTORNEY.

To all whom it may concern:

" ro race PATEN to.

JOHN H DAV'IS, 0F STOCKTON; CALIFORNIA.

1.1m: ooixisrnncrron FOR 'mnoron-rnnnns.

1,289,409. Original application filed May 24, 1917,

Be it known that 1, JOHN H. DAVIS, a citizen of the United States, residing at Stockton, in the county of San Joaquin, State of California, have'invented certain new and '-useful Improvements in Link Construction for Tractor-Treads; and I do declare the following to be a full, clear, and exact description of the'same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this application.-

Thisinventionrelates to improvements in the construction of an endless track for tractor treads, and is a divisional part of my application filed May 24th, 1917, Serial No.

. 170,677. This present invention relates to improvements in the link construction to which the tread feet or plates are fastened.

The object of the invention is to construct each link of the tread chain of two members,

having projecting studs by means of which the plates are'se'cured thereto. The adjacent studs, between the-two plates, overlap each other, andall of the studs. have elongated bolt holes, whereby the relative position of the parts may be altered to take up any wear which may occur at the joints between the links. 1

A further object ofthe invention is to produce a simple and inexpensive device and yet one which will be exceedingly effective for the purposes for which it is designed.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of thefollowing specification and claim.

In the drawings similar characters of reference indicate corresponding parts in the several views. s

Figure 1 is a bottom plan view of a pair of the tread plates showing the link construction, the bolts being .removed from one show the elongated slots. i V Fig. 2 is a section taken on 'a line wm' of Fig. 1.

Referring now more particularly to the characters of referenceof the drawings, the numeral 1 designates the tread plates or feet which are bolted to the chain .links of the -endless track by means of bolts 2. In my Specification of Letters Patent.

Patented Dec. 31,1918.

. consists of two members 3 and 4, provided with projecting studs 3 and 4 respectively. Each of the studs 3 is provided withian elongated bolt hole 3", while the studs 4 are each provided with similar bolt holes 4: through which bolt holes bolts 2 project. The adjacent studs 3 and 4* between the members 3 and 4:, overlap and their correspond ing bolt holes register with each other. The ends of the adjacent members 3 and 4 are linked together with any suitable joint structure as at 5, but preferably of that structure specified in the above entitled application for patent. By having each link of the-chain made of two separate members, bolted together in the manner specified, the same may be quickly assembled or taken apart.

By reason of the elongated bolt holes mentioned, when any wear occurs at the joint 5 between the bearing surfaces of the link members, this may be readily taken up by loosening the bolts and moving the lin sections toward each other, and the bolts can then again be tightened.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfils the object of the invention as set forth herein.

While this specification sets forth in detail theipresent and preferred construction ing studs to which the'track plate is fastened, the adjacent studs between the mem-'- bersoverlapping'each other and being removably connected together.

In testimony whereof; I afiix my signature in the presence of two witnesses.

;Ionu'H. DAVIS.

Witnessesi VEBADINE WARNER, BERNARD Pnrvn'r. 

